進氣(qi)(qi)溫(wen)(wen)(wen)度(du)(du)傳感器(qi)是一(yi)個(ge)負溫(wen)(wen)(wen)度(du)(du)系數(shu)熱敏電(dian)(dian)(dian)阻(zu),當溫(wen)(wen)(wen)度(du)(du)升高時(shi)(shi),電(dian)(dian)(dian)阻(zu)阻(zu)值減小,當溫(wen)(wen)(wen)度(du)(du)降低時(shi)(shi),電(dian)(dian)(dian)阻(zu)阻(zu)值增大(da),隨著電(dian)(dian)(dian)路(lu)中電(dian)(dian)(dian)阻(zu)的(de)(de)變化(hua),導致電(dian)(dian)(dian)壓(ya)的(de)(de)變化(hua),從而產生不同的(de)(de)電(dian)(dian)(dian)壓(ya)信(xin)號,完成控(kong)制系統的(de)(de)自動操作。在冷車時(shi)(shi),進氣(qi)(qi)溫(wen)(wen)(wen)度(du)(du)傳感器(qi)的(de)(de)信(xin)號與發動機(ji)水溫(wen)(wen)(wen)傳感器(qi)信(xin)號基本相同,在熱車時(shi)(shi),其(qi)信(xin)號電(dian)(dian)(dian)壓(ya)大(da)約是水溫(wen)(wen)(wen)傳感器(qi)的(de)(de)2~3倍。
進(jin)氣(qi)(qi)(qi)溫度傳感(gan)(gan)器的(de)作(zuo)用是檢測(ce)發動機的(de)進(jin)氣(qi)(qi)(qi)溫度,送給(gei)ECU作(zuo)為修正噴油量(liang)的(de)參考。該(gai)傳感(gan)(gan)器在電控燃油噴射系(xi)統中測(ce)量(liang)進(jin)氣(qi)(qi)(qi)溫度,并(bing)輸(shu)入到ECU,用以修正體(ti)積型空氣(qi)(qi)(qi)流量(liang)傳感(gan)(gan)器由于(yu)大氣(qi)(qi)(qi)溫度變化(hua)帶來的(de)進(jin)氣(qi)(qi)(qi)質量(liang)檢測(ce)的(de)誤差。
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